There are 3 types of floods that can be experienced in the Brisbane area:. Not all flooding events will be covered by insurance and you should always get clarification from your insurer about what types of flooding you are covered for. With the often significant cost of repairing property damage from flooding, short cuts are sometimes taken in the recovery after flooding and a good building inspector will identify sub-standard flood repairs.
The consequences are going to vary greatly depending on the circumstances surrounding the flood event including the depth, speed and duration of the flood. There are likely to be significant social and financial consequences for individuals. Water damage to the home and your belongings are consequences that should not to be underestimated as they can be the cause of ongoing stress, long after the flood has subsided.
There may be also physical and psychological health impacts that are lasting. If local industry is affected by severe flood then the economic affects can be devasting to individuals and communities.
Previous flood affected properties are often renovated after the flood event, however, your building inspector will be on the look out for tell-tale signs of previous flooding as water damage and mould can lead to serious health problems. The majority of new house purchases are subject to a pest and building inspection before the sale becomes unconditional.
If your house is known to have been in a flood or near a flood susceptible area, a thorough building inspection should be conducted as soon as possible. A renovated house can be a good sign that the damage caused from the floods was rectified.
Moisture from the flood waters may have caused water damage and mould in walls or roof cavities. Your building inspector will know what to look for and give you a thorough building inspection report on whether the house is in good condition or requires work to make it habitable.
A building inspection will also check your house is structurally sound. This is why a building inspection is crucial — especially for homes that have been damaged by floods or have been in an area of severe flooding. Expecting the worst allows you to prepare the home, should a flood happen again in the future. Flood insurance is a must, but do expect the insurance price to increase if the house has been flooded previously.
In Brisbane, flooding commonly results in water damage to buildings and other structures and loss of personal belongings to water damage. One of the lasting dangers of water damage to properties is the mould growth that can result from the wet conditions hidden inside the walls, subfloor and roof cavity of the home.
There can be significant financial challenges for homeowners in overcoming the destruction and loss of property, particularly if you are uninsured or your insurer deems it an uninsurable event. If the house is a high set, consider getting the house raised above the water levels recorded in the area. One of the lowest rejection rates. Get a Free Assessment. Read Also Three big things happening in Brisbane Property market in ? Connective Home Loans Review.
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The answer to this question will help us to understand if you have any special requirements for your home loan. Wivenhoe and Somerset dams provide Brisbane with drinking water and reduce the flood risk — but they have drawbacks:.
Before their construction we used to get floods quite regularly, making us more aware of flood, but now we are far more unconscious of the fact Brisbane does flood, Dr Cook said.
Humans have an extraordinary capacity to forget or ignore inconvenient past tragedy in favour of hoping for the best. Brisbane relies on the water held in the dams and they can run low, as anyone who lived through the four-minute showers of the millennium drought will be able to testify. But if the dams are filled to the brim to maximise our water stores for the next drought, it leaves no capacity to absorb or delay the next flood.
A key limitation of the dams is that they only capture water from the northern section of the Brisbane River catchment. The dams have no control over run-off from the Lockyer Valley, Bremer River or local catchments downstream from Wivenhoe. So where exactly the water falls has a big impact on how high the flood is in Brisbane.
None of the water that devastated Grantham in or which caused the Bremer River to reach Cyclone Wanda in was a relatively weak cyclone — but that did not prevent it from dumping huge amounts of rain on the Brisbane River catchment as an ex-tropical cyclone, resulting in the city's biggest flood since In contrast, there was no cyclone in , just huge amounts of rain over several months resulting in saturated catchments up and down the Queensland coast.
In , by the time Brisbane reached its flood peak on January 13, more than 20 Queensland towns had experienced a flood peak with significant effects, according to the BOM, some multiple times. The most devastating impacts were witnessed in Toowoomba and Grantham where a wall of water swept away cars, homes and lives. In Brisbane, the city gauge at the end of Edward Street reached 4. It becomes more difficult to compare floods post dam completion, but according to the BOM's analysis of known floods in the Brisbane and Bremer river basin :.
Modelling presented to the Commission of Inquiry showed that without the dams, the peak of the flood would have reached approximately six metres at the Port Office gauge.
That is higher than the flood peak but over two metres less than in and Flood maps for the and floods are available on the Brisbane City Council website.
Many in Brisbane believed Wivenhoe Dam was supposed to prevent the city from flooding again, so as the waters abated, it did not take long for the muddy finger-pointing to start.
With much debate in the public sphere, the Commission of Inquiry covered at length how and if the dam operators used the dam operation manual and its "W" strategies. As part of the inquiry, the commission hired independent expert hydrologist Mark Babister. The chapter on the management of the operation of the Wivenhoe and Somerset dams concluded:.
The Queensland Government, Seqwater and Sunwater were all found liable in a class action in for the negligent operation of the dams that worsened the flooding. Since residences in Grantham have been moved to higher ground, but areas in Brisbane continue to be developed despite the fact they fall within the and flood zones.
Architect James Davidson, whose practice JDA specialises in climate change mitigation and flooding, is not a believer in clearing out the flood plain per se. He said there had been a general recognition since that there was a problem to be dealt with in Brisbane.
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